topresidentobama, vicepresident biden for their leadership and standing strong and continuing to fight for a safer america. i would like to say they're see forhank you to the senators legislation that would keep guns out of hand and save lives. they stood by us right from the beginning. they were with us. we will not be defeated. we are not defeated. we will not be defeated. we are here now. we will always be here. we have no other choice. we are not going away. every day more people are killed in this country because of gun violence. our determination grows stronger. we leave washington hoping that others, both here and across the country, will join us in making the sandy hook promise. i pledge that we have great hope that more senators will take literally. i would like to end i repeating the sandy hook thomas begins, our hearts are broken. our spirits is not. thank you. it is now my great pleasure to introduce the president of the united states of america, barack obama. >> good job. , in few months ago response to too many tragedies, including the shootings of a u.s. congressman, gab

on "fox & friends," several high-ranking lawmakers calling onpresidentobamatoclassify the bombing suspect as enemy combat tant. remember, he wasn't read his miranda rights. what would it mean? and why is it important? the constitutional attorney will weigh in on this when we come back. morning, brian! loveour passat! um. listen, gary. i bought the lt one. nice try. says right here you can get one for $199 a month. you can't believe the lame-stream media, gary. they're all gone. maybe i'll get one. [ male announcer ] now everyone's going to want one. you can't have the same car as me, gary! i'm gett' one. nope! [ male announcer ] volkswagen springtoberfest is here and there's no better time to get a passat. that's the power of german engineering. right now lease one of four volkswagen models for under $200 a month. visit vwdealer.com today. the battle of bataan, 1942. [ all ] fort benning, georgia, in 1999. [ male announcer ] usaa auto insurance is often handed down from generation to generation because it offers a superior level of protection and because usaa's commitment to serve

,presidentobamavowedto bring anyone responsible to justice. >> we will find out who did this and we will hold them accountable. >> counterterrorism officials tell nbc news that multiple explosive devices were found at the scene. security remains tight in and around boston. residents being told to expect a continued heightened law enforcement presence as the city tries to come to grips with a violent attack in the heart of boston. and that was katie davis there with that report. now london's metropolitan police are reviewing security plans for this sunday's marathon after the explosion in boston. the minister told bbc the best way to show solidarity with boston is to continue the race as the french president has stepped up security around public buildings in this country and raised the threat level to red. >>> speaking earlier, it was said the long lasting impact of terrorist attacks are low. >> research into terrorist incidents over many, many years, their economic impact, their direct economic impact tends to be very, very small, indeed. a lot of good research done on this in israe

house,presidentobamapledgedto hunt down those responsible. >> make no mistake, we will get to the bottom of this and we will find out who did this. we'll find out why they did this. any responsible individuals, any responsible groups will feel the full weight of justice. >> reporter: monday was patriots day in massachusetts, and the boston marathon is usually a day of celebration. for many, it will now be remembered as a day of shock, sorrow, and terror. boston will be back in business today except for this huge crime scene that extends behind me for about a mile, three blocks on either side, an area closed off to business owners and even residents who live in this area and savannah, we should note public transit passers have been warned there will be random searches on the "t" here of bags and other objects. >> lester in boston thank you so much. nbc's justice correspondent pete williams following overnight developments in the investigation. pete, good morning. it seems there is no clearer picture as to who may be behind this. >> i think that's certainly true although ther

have been charged with crimes, would not be eligible. >>>presidentobamawillhost south korea's newly elected first female president at the white house next month. they will observe the 60th anniversary of the alliance between the u.s. and south korea. also high on their agenda, efforts to counter the nuclear threat posed by north korea. >>> in venezuela, demand for a recount in the presidential election. ballots were ignored leading to an anti-government protest. the election results were certified. the winner by a razor thin margin less than one percentage point hand-picked by president late hugo chavez to carry on the separatist union. >>> following the boston bombings, scotland yard is beefing up the already extraordinary security measures they already put in place for margaret thatcher's funeral tomorrow. hundreds of military troops will be visible along the procession route through the streets of london. and with so many dignitaries that are expected to attend shortstops, including queen elizabeth and former prime minister, scotland yard is fine tuning its behind the scenes secu